Product · UI/UX · Frontend · QA · AI-native
I design the product,model ,code . End-to-end product engineer. I bridge the gap between human needs and machine intelligence, shaping everything from upfront research and UI design to AI behavior, React implementation, and comprehensive testing.
NSU ’25 North South University
8 end-to-end case studies
5 disciplines, one person ✦ CURRENTLY Designing AI that knows when to ask
Research✦ Product design✦ Design systems✦ Prompt & eval design✦ React + TypeScript✦ Motion✦ QA & accessibility✦ Research✦ Product design✦ Design systems✦ Prompt & eval design✦ React + TypeScript✦ Motion✦ QA & accessibility✦ Research✦ Product design✦ Design systems✦ Prompt & eval design✦ React + TypeScript✦ Motion✦ QA & accessibility✦
Selected work · 2024 – 2026
Nine products, each from first sketch to shipped code. app.kova.money
Total balance · USD equivalent $4,826,310 .42 ▲ 13.4% · 30D
7D 30D 90D
$4.50M $5.00M FORECAST 12 Sept 27 Sept Today 25 Oct Projected low $4.78M · 23 Oct Hover or ← →
Accounts 5 currencies
$ USD 44% of balance $2,140,880.10 € EUR 27% of balance €1,204,310.00 £ GBP 16% of balance £612,040.55 ◎ USDC 10% of balance 482,900.00 ৳ BDT 3% of balance ৳16,410,000.00 ● Live prototype · try the chart 01 · Fintech · business banking · 2026
Kova Making a six-figure payroll feel boring.
Business banking for teams that pay people in 38 countries. I redesigned payouts, the scariest button in the product, around one question: is anything unusual in this batch?
Concept project · product design + React
Read the case study → relay.app
02 · AI agents · 2026
Relay An agent you actually let drive.
Relay plans, runs and reports multi-step work. I designed how it shows its plan, when it stops to ask, and how you watch it from your lock screen, and I wrote its system prompt.
Concept project · product + prompt design
Read the case study → lattice.app
03 · Edtech · 3D + AR · 2025
Lattice Proteins you can hold in your hand.
A 3D viewer built from real Protein Data Bank files, an AR flow from study card to desk in three taps, and quizzes you answer by pointing.
Concept project · design + Three.js prototype
Read the case study → vital.app
04 · Health · AI · 2025
Vital Health data, in one calm sentence.
A daily read that compares you to yourself, a blood-test explainer with real ranges, and a one-page GP brief, with an AI that explains and never diagnoses.
Product UI/UX AI-native Frontend Concept project · product design + data-viz
Read the case study → tally.app
05 · Personal finance · AI · 2025
Tally Money, explained like a friend.
Answer the question people actually ask: a 30-day forecast, a chat that shows its working, and a subscription killer that never shames.
Product UI/UX AI-native Frontend Concept project · brand + product design
Read the case study → Smaller bets, same care. About
Designer by training, engineer by habit, QA by paranoia. I don't believe in silos. I take features from raw research all the way to production-ready React and tests, mapping out the UI and tuning the AI behavior along the way.
Five hats, one person, fewer handoffs. Hover a card. Each one shows real work from a case study.
NOT NOW:
01 4.5 / 5
Product I find the one job worth doing, and say “not now” to the rest.
Discovery Jobs-to-be-done PRDs Success metrics 02 5.0 / 5
UI/UX Flows and systems that feel obvious later. Accessible by default.
IA Interaction Motion Design tokens WCAG 2.2 <ApprovalBar
batch={batch}
holdMs={1200}
/> ✓ build passed 03 4.0 / 5
Frontend I build the components I design, in React and TypeScript.
React Next.js TypeScript Storybook Three.js 04 4.5 / 5
QA The test plan comes before the first screen. Then I try to break it.
Test matrices Playwright VoiceOver Bug bashes “Book the cheapest one” Two are within 10%. Want me to ask before picking? ✦
05 4.5 / 5
AI-native I design model behaviour like screens, bad answers first.
Prompts Evals Guardrails RAG + tool-use UX Education
North South University Graduated 2025 · Dhaka, Bangladesh
Ask Tara about it
Process
I fall into the problem before I draw a screen. 01
Frame Product One-sentence job, a success metric, and the “not now” list.
02
Sketch the behaviour AI-native Write what the product should do, including how the model behaves when it’s wrong.
03
Design UI/UX Flows, states, motion and copy. Empty, error and slow states first.
04
Build Frontend React + TypeScript, tokens straight from the Figma file. I pair on the PR.
05
Break it QA Test matrix, device lab, VoiceOver pass and adversarial prompts.
06
Measure & tune Product Ship behind a flag, read the funnel and the transcripts, fix the prompt.
Playground
Motion, mischief and things nobody asked for. Six small components from the case studies, and all of them work. Go on, poke them.
Constellation Canvas 2D · stars dodge your cursor · click to connect
Lisbon offsite shortlist 0.0s
Read the brief Searched 23 venues Checked 4 calendars Ranked 3 options Hold 12–14 March Agent run From Relay · plan → act → stop at the risky step
Can I afford Lisbon in May?
Checking 30-day forecast…
Friendly Concise Careful ↻
Streaming reply From Tally · thinking shimmer → tokens · tone switch
October payroll · 41 people $412,600.00
Hold to send Press and hold Hold to confirm From Kova · 1.2 s hold · works with Space too
Day / night Spring 0.6 s · switches this whole site
))) •••• •••• •••• 4410 Cardholder NADIA CHOWDHURYdebit Nadia C. ••• Spend limit $25,000 / mo Frozen No
Tilt card 3D transform · pointer tilt + glare · click to flip
Patch Checks every colour token against WCAG. Has never approved #FF0000.
Dot Finds bugs, literally. Mascot of every bug bash.
Momo Head of QA. Drums on the keyboard during reviews.
